Tryptophan premix

A technology of tryptophan and premix, applied in the field of feed, can solve problems such as poor feeding effect, livestock and poultry don't like to eat, insufficient palatability, etc., and achieve the effect of improving utilization rate

Active Publication Date: 2010-05-05
浙江拜克生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method solves the problem of how to mix tryptophan into the feed evenly, but practice has proved that the mixed feed pre

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The composition of the liquid culture medium of Escherichia coli is: glucose 30g L -1 , (NH 4 ) 2 SO 4 2.0g·L -1 , corn steep liquor 30mL, bean cake hydrolyzate 20mL, KH 2 PO 4 ·3H 2 O 1.0g·L -1 , MgSO 4 ·7H 2 O 0.4g·L -1 , MnSO 4 ·H 2 O 0.01g·L -1 , FeSO 4 ·7H 2 O 0.01g·L -1 , VB1300μg, VH200μg, pH value is controlled at 7.0-7.2. The sterilization pressure is 0.075Mpa, and the sterilization takes 15 minutes. Escherichia coli was cultured with shaking in the liquid medium for 16 hours, and the culture temperature was 36°C.

[0029] Escherichia coli is cultivated in a liquid medium to obtain mature seeds, and the mature seeds are then transferred to the sour medium in a fermenter for fermentation. The composition of the fermentation medium is: glucose 130g L -1 , (NH 4 ) 2 SO 4 40g·L -1 , phenylalanine Phe 0.15g·L -1 , Tyrosine Tyr 0.15g·L -1 , bean cake hydrolyzate 19mL, corn steep liquor 22mL, KH 2 PO 4 ·3H 2 O 10.0g·L -1 , MgSO 4 ·7H 2 O...

Embodiment 2

[0034] The difference between embodiment two and embodiment one is: before corn cob powder is added to the thick slurry, silicon dioxide and sodium chloride of feed grade are added in the thick slurry in agitated state, continue to stir for 4 minutes, Add 80-mesh corncob powder into the thick slurry in a state of stirring, and the addition amount of the corncob powder is 1 / 10 of the thick slurry to obtain a mixture with a tryptophan content of 4%. The parts by weight of silicon dioxide and sodium chloride in the mixture are 3%. The mixture was air-dried to control its water content at 1%.

Embodiment 3

[0036] The difference between embodiment three and embodiment one is: before corn cob powder is added to thick slurry, calcium carbonate, silicon dioxide and sodium chloride of feed grade are added in the thick slurry that is stirring state, continue to stir After 8 minutes, add 60 mesh corncob powder into the thick slurry in a stirring state, the amount of corncob powder added is 1 / 5 of the thick slurry to obtain a mixture with a tryptophan content of 2%. The parts by weight of calcium carbonate, silicon dioxide and sodium chloride in the mixture are 5%. The mixture was air-dried and dried so that its water content was controlled at 3%.

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Abstract

The invention belongs to the technical filed of fodders and particularly relates to a tryptophan premix; the processing method of the tryptophan premix comprises the following steps: (1) fermenting: mycelia are cultured in liquid medium to obtain matured seeds, and the matured seeds are transplanted to acidification nutrient medium of a fermentation cylinder to be fermented and metabolized to obtain tryptophan fermentation liquid; (2) separation: the tryptophan fermentation liquid carries out solid-liquid separation to obtain clear liquid and thick slurry; (3) mixing: while the thick slurry is stirred, corn cob powder is added, so as to obtain mixture with 0.5-4 percent of tryptophan content; (4) drying: the mixture is dried to control the water content to be 1-10 percent. The tryptophan premix has good palatability to lead animals to like to eat and good feeding effect.

Description

technical field [0001] The invention belongs to the technical field of feed, in particular to a tryptophan premix. Background technique [0002] Premix is ​​the abbreviation of additive premix feed. It is an intermediate compound feed product made by mixing one or more trace components with carriers or diluents according to requirements and uniformly mixing them. Trace components include various trace mineral elements, various vitamins, synthetic amino acids and other additives. Carriers are particles capable of carrying or adsorbing trace amounts of active additives. [0003] There are two types of amino acids - essential amino acids and non-essential amino acids. The eight essential amino acids are isoleucine, lysine, leucine, methionine, phenylalanine, valine, threonine, and tryptophan. The reason these amino acids are called essential is not because they are more important, but because the organism itself cannot produce them. Therefore, these amino acids must be supp...

Claims

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Application Information

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IPC IPC(8): A23K1/16A23K1/14A23K10/12A23K10/30A23K20/142A23K40/00
CPCY02P60/87
Inventor 刘亮孙俊杰陈中兵潘毅姜小东冯建忠
Owner 浙江拜克生物科技有限公司
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